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Did you know?
Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.